I've been hearing some occasional noise from the front right and this weekend took some time to figure out what it is. After taking off the front right tire, at first I noticed that the 4 wheel posts were loose relative to the rotor, but after trying to move the rotor, the rotor itself wiggles back and forth a half inch or so (which I'm assuming is BAD). I took the dust cap off the wheel hub nut (hope I'm calling the right thing) and the nut itself seems very tight. What else might account for a loose rotor?
The only work I've done is to change the front brake pads several months ago (although the left rotor assembly seems very tightly attached (no movement)). Would any work of moving the brake calipers around have affected the rotor looseness?
Other than the wheel hub nut, I'm not sure what to look at. Any suggestions?
Thanks.